Encyclopaedia of Scientific Units, Weights, and Measures: Their SI Equivalences and Origins | Geoff Brumfiel 14 Sep 2012 |
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Astronomical Society of the Pacific | Judson, Lewis Van Hagen 1960 |
Proceedings of the International School of Physics "Enrico Fermi".
A Measure of All Things: The Story of Man and Measurement | The NIST Reference on Constants, Units, and Uncertainty |
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Department of Commerce, National Bureau of Standards | "The Apache Point Observatory Lunar Laser-ranging Operation APOLLO : Two Years of Millimeter-Precision Measurements of the Earth-Moon Range" |
Approximately the distance between the Earth and Sun.
14.
13